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BILANL PERMUTATION LOCK.

No. 291,467. PatentedJan. 1,1884.

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Ju /era tar Patented .Ian. 1, 18 84 L. BILAN.

PERMUTATION LOCK.

(ModeL) WZZ LCJJfiF 1 a 3 U TED STATES ATENT LOUIS B AnQonIo A orrY, IOWA, Assicnon on ONEHALF TO F. 'J. HORAKAND .I. K. BERANEK, none on SAME PLACE.

Towll whom it may concern:

.PERMUTAT ION-LOCK.

SPECIFICATION forming part of Letters Patent No. 291,467, dated January 1, 1884.

i Application filed septen iber 10, 1883. ModeL) Be it known that I, LOUIS BILAN, a'} citizen of the United States,residing at Iowa City, in

the county of J ohnsonand State of Iowa, "have invented certain new and useful Improvements in Permutation-Locks;\and I do hereby de clare the followingto be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, in which Figure 1 is a rear elevation of the door-lock with back plate removed. Fig. 2 is a perspec- 1 I are modifications.

knob.

tive View of same dissected. Figs. 3 and 4i p This invention has relation to a perniutation or combination lock of that class in which the Fig. 5 isa side view of the;

. turning of a lettered or numbered disk to the right and left alternately certain distances, in-

dicated bya combination of letters, ornumbers, so adjusts the tumblers or slides by which the bolt is retained that the latter may be withdrawn and the lock opened. Permuration-locks of this description are usually provided with a number of rotary tumblers notched a on their peripheries, and all the notches are made to coincide when the combination is properly worked, so as to provide a space for the click, pawl, or other device through which the retraction of the bolt is effected.

My invention contemplates the employment, in lieu of rotary disks or tumblers, of straight slides, which are notched in such a way that when all the notches are made to coincide the bolt may be retracted by turning the knob. The knob-shaft carries a cam, which, being turned alternately, moves a setting-slide in opposite directions and to distances regulated by the relative positions of the letters or figures of the combination. As this slide moves, it successively adjusts the tumblerslidesuntil all their notches coincide. The knob being then turned in the opposite direction to its last combination movement, causes the bolt to be withdrawn.

My invention consists in the construction and novel combination of parts essential to such a lock, and in the provision of expedients whereby the lock is adapted to various uses,

such as on. trunks, room-doors, tills, and all a ordinary receptacles of valuables.

, eled head, F,

. Referring to the accompanying drawings, in which Figs. 1 and 2 illustrate a permutationlock adapted for use on an ordinary door, A designates thelock-case, containing the sliding bolt B, which is constructed with a rectangular slot, B, for the reception of a block, 0,

incide. This ring is secured to the door. The

cam D is formed with two shoulders, e 6, nearly diametrically opposite each other, and these shoulders terminate at the periphery of the disk in rounded angles 6.

Attached to the bolt, and located within a recess or mortise, f, is a dog, F, having abevfor a purpose hereinafter specified. a

G designates a setting-slide, consisting of a metal plate slotted at g and notched at g, and carrying upon a pin, 9 an anti-friction roller, 9 When the knob is turned around, one of the shoulders e of the cam D comes in contact with the roller 9 and pushes the plate G forward or backward, according to the direction in which the knob is turned.

At either end of the slide G is a spring, H, which, being pressed against the end wall of the lockby the action of the cam, forces the slide back to its normal position when released from the cam.

I I are slotted and notched slides lying parallel with the slideG, and separated from each other by the slotted guide-plates KK. Each of the slides I I is formed with a number of holes, i, for the reception of a pin, i, the position of which is regulated by the combination.

As the parts are shown in the drawings, the combination is, for instance, I D J, which is used in the following way: Supposing the bolt to be projected and the door locked, the knob is turned to the left once or twice, so as to throw the setting-slide into position. It is then turned to the right to letter I, then to the left to letter D, and then again to the right to letter J. This completes the working of the combination. By then turning the knob to the left the lock will be drawn back and opened.

The effect of the above-specified manipulation of the knob on the lock mechanism is that, as the setting slide is pushed to the left, (looking toward the same from the knob side,) the end of its slot takes hold of the pin z" in slide I, and the latter in turn catches the pin on slide I, and thus the slide 1 is pushed to the left far enough to bring the notch j to the middle of the lock. The next movement of the combination pushes the slide Iback to the right, and the final movement brings it to a coinciding position with slide 1. The knob being now turned to the left, all the notches in the slides are made to coincide,whereupon the dog F falls into the recess thus provided, and engages the slide G, and, as the latter moves, the bolt is moved with and through it. To

. project the bolt,the knob is turned to the right once or twice and then indefinitely to the left and right, so as to disarrange the combination.

By a modification in the construction of the bolt, the lock may be adapted for trunks or drawers. Thus, for trunk purposes, the bolt, instead of projecting through the end of the lock-case, should have ahook, L, Fig. 4, which will enter a staple or keeper depending from the trunk-lid. For use on a drawer, a supplementary vertically-sliding bolt, M, may be employed, the main bolt being recessed at m, and the supplementary bolt rounded on its lower end, so as to automatically fall into and rise from the recess. For trunks a pivotal ring, instead of aknob, may be used, as aknob is liable to be broken when the trunk is roughly handled.

In the drawings I have shown but two slides or tumblers, I I, but as many may be used as is desiredthe more slides the more intricate the combination.

To add still further to the combination, I employ the expedients shown in Fig. 3 of the 5 drawings. Instead of fastening the cam D directly to the knob-stem, Iarrange it loosely thereon, and secure to the knob-stem a hand or index, N. In the cam I provide anumber of screw-holes, a, suitably lettered or num- 5o bored in keeping with the outside numbering or lettering on the knob-disk. I can now turn the cam to any position I require, and set it by inserting a screw through the index and into one of the holes.

By means of the letters on the cam, I am shown what letters to take on the outside.

To prevent the door-lock from being locked unintentionally from the outside, or when not desired, a catch or hook may be arranged under the plate, which will fall or press into a recess in the bolt, so that the same cannot be moved forward without first pressing aspring under said hook:

What I claim as my invention is- 1. In a permutation-lock, the combination, with the bolt B and the pivotal dog F, carried thereby, of the straight slotted and notched slides or tumblers I I, lying alongside of and parallel with said bolt, the settingslide G, the knob 0, having a stem, 0, and cam-disk D, substantially as described.

2. In apermutation-lock, the combination, with the knob through which the combination is worked, and the notched and slotted permutation-slides, of the cam-disk attached to the knob-stem and the setting-slide located below or beside said disk and at right angles to the knob-stem, substantially as described.

In testimony whereof I affix my signaturein 8o presence of two witnesses.

LOUIS BILAN.

' Witnesses:

L. J. PALDA, Jos. BARBATTA. 

